@Regis74 It works fine at home, but occasionally see the reconnect when logging in.
It reconnects often in schools. They let the learn chess basic work, and we can also go to the practice section, but the engine will not respond to our moves. I don't know what to say to the network admin to permit the engine to load. If it wasn't for the engine not loading, computer games would work, but they don't.
If only the practice section would work like this basic section
lichess.org/learn#/15/2s.
This would remove the need to have an engine load in the practice section.
More students could then enjoy the practice section.
The next step might be to get them to play between schools using kid mode controlled by a password so they don't get out of kid mode before the expiry date of there kid mode. That's another feature that's not there yet. That would be good for parents or others that created an account for a child so that they can see their progress.